diff --git a/Source/monster.cpp b/Source/monster.cpp
index 1f848055d..d3e60ca6f 100644
--- a/Source/monster.cpp
+++ b/Source/monster.cpp
@@ -2736,7 +2736,7 @@ BOOL M_DoRSpAttack(int i)
 		    monster[i]._mVar3,
 		    0);
 #ifdef HELLFIRE
-		if (Monsters[i].Snds[3][0] != 0)
+		if (Monsters[i].Snds[3][0] != 0) // BUGFIX `Monsters[i].` should be `monster[i].MType->`
 #endif
 			PlayEffect(i, 3);
 	}